ECODELTA vs Q-Cells - solar panel manufacturer comparison
Q-Cells has the broader catalog (89 vs 13 models). Q-Cells leads on peak efficiency at 23.20%. Q-Cells leans bifacial (39% of lineup).
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
EcoDelta is a French developer of wind and solar energy projects. They offer expertise in project management and financing to maximize energy output. The company strives to promote, develop, and operate decentralized renewable electricity projects.
- Founded
- 2002
- Headquarters
- La Ciotat, France
Qcells is a renowned global provider of complete energy solutions, specializing in solar cells and modules, energy storage solutions, downstream project business, and energy retail. The company has a strong heritage dating back to its foundation in Germany and has become a leader in technology innovations. As an...
- Founded
- 1999
- Headquarters
- Seoul, South Korea
- Annual capacity
- 11.2 GW/year
- Employees
- 2000+
- Listed
- NASDAQ: HQCL
- Tier 1 bankable
- Yes
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
Q-Cells skews to higher efficiency: 2% of lineup is 23%+
Q-Cells offers more 600W+ panels (19% of lineup)
Dominant cell tech: <strong>TOPCon</strong> (62%)
Dominant cell tech: <strong>PERC</strong> (43%)
The flagships
Written summary
ECODELTA, formally Eco Delta Power Co., Ltd., is a Chinese manufacturer headquartered in Changzhou, Jiangsu Province. It is a comparatively young, mid-market brand that does not appear on BloombergNEF's Tier 1 list, and independent trackers put its annual module capacity at roughly 3.2 GW with a commercial presence in around 50 countries. Q-Cells, operating as Hanwha Q CELLS, traces its roots to a company founded in Germany in 1999 and now operates under Hanwha Group with major manufacturing in South Korea and the United States (including a large Georgia facility). Q-Cells holds confirmed Tier 1 bankability status from BloombergNEF and ranked among the top manufacturers in SolarReviews' 2025 rankings, giving it a substantially stronger institutional footprint, longer track record, and greater financial backing than ECODELTA.
In terms of product focus, ECODELTA's catalog centers on residential and smaller commercial rooftop installations, mixing TOPCon and PERC cell technology across a limited lineup (roughly a dozen models) with efficiencies up to about 22.5 percent and warranties around 26 years, positioning it as an accessible, newer-technology option at a lower price point. Q-Cells offers a much broader portfolio of around 90 models spanning residential rooftops, commercial installations, and utility-scale projects, with efficiencies reaching 23.2 percent and strong value positioning among Tier 1 residential panels; EnergySage's 2024 installer survey also places Q-Cells in a lower-failure-rate tier, with reported defect rates under 0.1 percent over five-year windows.
For a typical buyer in 2025, Q-Cells is the safer default choice given its confirmed Tier 1 status, long operating history, broader product range, and documented field reliability data, which collectively reduce long-term warranty and performance risk. ECODELTA may appeal to cost-sensitive buyers seeking newer cell technology at a lower upfront price, but its lack of Tier 1 bankability and limited track record mean it carries more uncertainty, particularly around long-term manufacturer support. The two brands are not interchangeable: Q-Cells is the more established, lower-risk option, while ECODELTA competes primarily on price in the mid-market segment.
Generated by Claude Sonnet 5 · 2026-10-04
Other brand comparisons
Shop prices: See 3 ECODELTA offers · See 25 Q-Cells offers
Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.